package cn.aifeix.controller;

import cn.aifeix.domain.User;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
@RequestMapping("/order")
public class OrderController {

    @Autowired
    private RestTemplate restTemplate;

    @GetMapping("/{id}")
    // 标记方法熔断，fallbackMethod指定的是托底方法名称，当远程服务调用出现异常，或是方法本身出现异常，会触发托底方法
    @HystrixCommand(fallbackMethod = "getUserByIdFallbackMethod")
    public User getUserById(@PathVariable("id") Long id){
//        String url = "http://localhost:10020/user/" + id;
        String url = "http://user-server/user/" + id;
        return restTemplate.getForObject(url, User.class);
    }

    // 降级方法，参数和返回值必须和被熔断的方法一致 ，方法名要和fallbackMethod的值一致
    public User getUserByIdFallbackMethod(Long id){
        return new User(-1L,"开启短路","网络异常，请稍后重试");
    }

}
